MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Vapour Phase Refining

Why NaCN is u...

Question

Why NaCN is used during the extraction of of Au or Ag from native ore(in leaching),?.?

Open in App

Solution

Ag/Au forms a soluble complex with NaCN or KCN

Suggest Corrections

thumbs-up

0

Similar questions

Q. Assertion :Extraction of gold from its native ore involves leaching the metal ore with dilute solution of NaCN in presence of air. Reason: This is an oxidation reaction and leads to the formation of a soluble complex.

Q. Leaching can be used for the extraction of which metals?

(i) P b

(i i) A l

(i i i) A g

(i v) A u

Q. Assertion :Gold and silver are extracted from their native ores by leaching. Reason: Both silver and gold particles dissolve in dilute solution of sodium cynide in presence of oxygen.

Q. During the extraction of Ag and Au using a KCN solution,cyanide ions react with metal ions as :

Q. Statement 1: Leaching is employed in the extraction of aluminium, silver and gold.

Statement 2: During leaching, the impurities in the ore are chemically removed by dissolving them in a suitable reagent.

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Vapour Phase Refining

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Vapour Phase Refining

Standard XII Chemistry

Join BYJU'S Learning Program

CrossIcon